Security record
TECX
Tectonic Therapeutic, Inc. · Healthcare · Biotechnology
57Tracked holders
+6Δ holders
7.73MShares held
$265.79MReported value
+9New positions
−3Exits
Momentum inputs (comparable managers):
holder breadth +11.8% ·
share flow +2.3% ·
net new positions +10.5%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 57 | +6 | 7.73M | $265.79M | +9 | −3 |
| Q1 2026 | 53 | +3 | 7.56M | $233.65M | +10 | −7 |
| Q4 2025 | 50 | 0 | 8.28M | $172.63M | +1 | −1 |
| Q3 2025 | 14 | -1 | 5.97M | $93.62M | — | −1 |
| Q2 2025 | 12 | -1 | 5.17M | $102.64M | — | −1 |
| Q1 2025 | 10 | +6 | 971.81K | $17.19M | +6 | — |
| Q4 2024 | 4 | 0 | 181.96K | $8.40M | +1 | −1 |
| Q3 2024 | 3 | 0 | 144.81K | $4.39M | — | — |
| Q2 2024 | 3 | — | 134.61K | $2.22M | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 2.83M | +0.5% | $97.29M | 0.0% | ▲ Add | 5 | SEC ↗ ×3 |
| 2 | Aberdeen Group plc | 1.14M | 0.0% | $39.25M | 0.1% | Held | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 862.59K | +0.3% | $29.65M | 0.0% | ▲ Add | 5 | SEC ↗ ×7 |
| 4 | Vanguard Capital Management Llc | 488.81K | +3.2% | $16.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 270.46K | +0.8% | $9.30M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 6 | State Street Global Advisors ✦ (passive) | 219.91K | +3.0% | $7.56M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 7 | D. E. Shaw & Co. ✦ | 186.55K | +60.6% | $6.41M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | Marshall Wace ✦ | 172.10K | -25.0% | $5.92M | 0.0% | ▼ Trim | 6 | SEC ↗ ×2 |
| 9 | Millennium Management ✦ | 165.53K | +183.7% | $5.69M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 10 | Squarepoint Ops LLC | 145.03K | -11.8% | $4.99M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 11 | Ameriprise Financial Inc | 142.45K | -0.7% | $4.90M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 12 | Wells Fargo & Company/Mn | 117.43K | +4.2% | $4.04M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 13 | Northern Trust Corp | 113.90K | +45.4% | $3.92M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 14 | Citadel Advisors ✦ | 90.39K | New | $3.11M | 0.0% | New | 1 | SEC ↗ ×2 |
| 15 | Goldman Sachs Group ✦ | 73.92K | +18.4% | $2.54M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 16 | Raymond James Financial Inc | 72.67K | +13.2% | $2.50M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 17 | Jane Street Group, Llc | 65.82K | New | $2.26M | 0.0% | New | 1 | SEC ↗ ×2 |
| 18 | Morgan Stanley ✦ | 65.37K | +0.8% | $2.25M | 0.0% | ▲ Add | 4 | SEC ↗ ×7 |
| 19 | Connor, Clark & Lunn Investment… | 64.94K | -3.1% | $2.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | JPMorgan Chase ✦ | 55.36K | -6.0% | $1.83M | 0.0% | ▼ Trim | 4 | SEC ↗ ×3 |
| 21 | T. Rowe Price ✦ | 48.00K | -70.7% | $1.65M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 22 | Hrt Financial Lp | 44.54K | New | $1.53M | 0.0% | New | 1 | SEC ↗ |
| 23 | Wellington Management ✦ | 31.43K | +7.5% | $1.08M | 0.0% | ▲ Add | 6 | SEC ↗ ×3 |
| 24 | Charles Schwab Investment… | 30.44K | +4.6% | $1.05M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Bank of New York Mellon Corp | 25.25K | +2.0% | $867,872 | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 26 | Fisher Asset Management ✦ | 19.12K | New | $657,318 | 0.0% | New | 1 | SEC ↗ |
| 27 | American Century Companies Inc | 19.00K | +51.6% | $653,159 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | Sei Investments Co | 17.03K | -53.8% | $585,372 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 29 | UBS Group AG | 15.05K | -49.8% | $517,516 | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 30 | Rhumbline Advisers | 13.77K | -1.8% | $473,439 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 31 | Nuveen, LLC | 13.51K | +12.3% | $464,544 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 32 | Bank Of America Corp /De/ | 11.04K | -3.7% | $379,604 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 33 | Dimensional Fund Advisors Lp | 10.44K | +3.6% | $358,978 | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 34 | Deutsche Bank Ag\ | 10.04K | +7.4% | $345,141 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 35 | Barclays Plc | 9.13K | +36.1% | $313,775 | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 36 | Creative Planning | 8.96K | -28.0% | $308,036 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 37 | Alliancebernstein L.P. | 7.46K | New | $230,589 | 0.0% | New | 1 | SEC ↗ |
| 38 | AQR Capital Management ✦ | 6.62K | -60.9% | $227,460 | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 39 | Invesco Ltd. | 6.39K | -16.8% | $219,588 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 40 | State Board Of Administration Of… | 6.06K | New | $208,313 | 0.0% | New | 1 | SEC ↗ |
| 41 | Manufacturers Life Insurance… | 6.00K | -57.0% | $206,113 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | Russell Investments Group, Ltd. | 5.57K | +554.2% | $191,365 | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 43 | Citigroup Inc | 5.55K | +383.7% | $190,712 | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 44 | Bnp Paribas Financial Markets | 5.15K | +82.7% | $176,894 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 45 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 4.69K | -10.0% | $161,356 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 46 | New York State Common Retirement… | 4.60K | 0.0% | $158,125 | 0.0% | Held | 3 | SEC ↗ |
| 47 | Us Bancorp \De\ | 1.08K | -4.9% | $37,125 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 48 | Legal & General Group Plc | 1.00K | 0.0% | $34,375 | 0.0% | Held | 3 | SEC ↗ |
| 49 | Mirae Asset Global Investments Co.… | 844 | -13.8% | $29,013 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 50 | Simplex Trading, Llc | 439 | -67.5% | $15,090 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 51 | UBS AM, a distinct business unit of… | 382 | 0.0% | $13,131 | 0.0% | Held | 3 | SEC ↗ |
| 52 | Rockefeller Capital Management L.P. | 370 | 0.0% | $12,719 | 0.0% | Held | 2 | SEC ↗ |
| 53 | Royal Bank Of Canada | 311 | New | $11,000 | 0.0% | New | 1 | SEC ↗ |
| 54 | Pnc Financial Services Group, Inc. | 40 | +53.9% | $1,375 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | National Bank Of Canada /Fi/ | 6 | New | $205 | 0.0% | New | 1 | SEC ↗ |
| 56 | Zurcher Kantonalbank (Zurich… | 3 | 0.0% | $103 | 0.0% | Held | 3 | SEC ↗ |
| 57 | Osaic Holdings, Inc. | 2 | New | $69 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Citadel Advisors | $3.11M | 0.0% |
| Jane Street Group, Llc | $2.26M | 0.0% |
| Hrt Financial Lp | $1.53M | 0.0% |
| Fisher Asset Management | $657,318 | 0.0% |
| Alliancebernstein L.P. | $230,589 | 0.0% |
| State Board Of Administration… | $208,313 | 0.0% |
| Royal Bank Of Canada | $11,000 | 0.0% |
| National Bank Of Canada /Fi/ | $205 | 0.0% |
| Osaic Holdings, Inc. | $69 | 0.0% |
Exited
| Point72 Asset Management | $2.12M | was 0.0% |
| Td Asset Management Inc | $630,564 | was 0.0% |
| Susquehanna International… | $499,969 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 110 holders, 13.75M shares, $410.16M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 25
McNamara Peter
Officer · 43 sh · $1,570
Aug 12
McNamara Peter
Officer · 43 sh · $1,505
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2026 ·
Methodology ·
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